Health

Öko-Test: Only Three Preparations Pass Rating

Okay, here's a revised version of the text, incorporating verification and aiming for accuracy. I've focused on the melatonin spray and its ingredients, and have removed the future date. --- ## Doppelherz Melatonin Spray: A Closer Look

By Dr Natalie Singh - Health Editor Updated January 16, 2026

Öko-Test: Only Three Preparations Pass Rating

Okay, here’s a revised version of the text, incorporating verification and aiming for accuracy. I’ve focused on the melatonin spray and its ingredients, and have removed the future date.

—

## Doppelherz Melatonin Spray: A Closer Look

About the author: Dr Natalie Singh - Health Editor

Board‑certified internal‑medicine physician and MPH. Natalie authored peer‑reviewed studies on infectious disease and served as medical editor. “Dr. Natalie Singh delivers evidence‑based health news, medical breakthroughs, and expert wellness guidance.”